재순환 영역이 램제트 연소실에서의 열전달 특성에 미치는 영향

다국어 초록 (Multilingual Abstract)

This experimental study has been conducted to investigate the effect of the recirculation zone on the multi-slot film cooling in the ramjet combustor. The recirculation zone which is generated by the protrusion tip on the entrance of the coolant flow path affects on the first slot. Velocity fields, dimensionless temperature fields and adiabatic film cooling effectiveness on the downstream wall of the slot exit are measured. The results show that the film cooling performance is rapidly decreased after the slot exit by shear layer and high turbulence intensity between separated flows and coolant flows.

참고문헌 (Reference)

1 "램제트/스크램제트의 기술동향과 소요기술 분석 Ⅰ. 램제트 엔진(액체램제트, 덕티드로켓)" 10 (10): 72-86, 2006

2 "Velocity and temperature profiles in turbulent boundary layers with tangential injection." 84 : 45-54, 1962

3 "Use of theoretical flow to correlate data for film cooling of heating and adiabatic wall by tangential injection of gases of different fluid properties." 1959

4 "The effect of slot height and slot turbulence intensity on the effectiveness of the uniform density J. of Heat Transfer" 469-475, 1968

5 "Influence of injection type and feed arrangement on flow and heat transfer in an injection slot" 124 : 132-141, 2002

6 "Heat transfer and effectiveness for a turbulent boundary layer with tangential fluid injection ASME J. of Heat Transfer" 303-312, 1960

7 "Forced convection from non-isothermal surfaces." university of michigan press : 1953-, michigan

8 "Film Cooling" academic press (academic press): 1974-, pp.321-379

9 "Computer-based areal surface temperature and local heat transfer measurements with thermochromic liquid crystals Experiments in Fluids" 13 : 26-32, 1992

10 "A note on the use of a boundary layer model for correlating film cooling data" 8 : 55-65, 1964

11 "A new liquid crystal color calibration technique using neural networks and median filtering" 14 : 113-120, 2000

12 "A Color image processing system for transient liquid crystal heat transfer experiments" 118 : 421-427, 1996